libft/ft_itoa.c at master · devwithmike/libft · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mimeyer <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/05/21 23:06:08 by mimeyer           #+#    #+#             */
/*   Updated: 2019/05/28 10:56:42 by mimeyer          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_itoa(int nb)
{
	char	*str;
	long	n;
	int		i;

	n = nb;
	i = ft_numlen(n);
	if (!(str = (char*)malloc(sizeof(char) * (i + 1))))
		return (NULL);
	str[i--] = '\0';
	if (n == 0)
	{
		str[0] = 48;
		return (str);
	}
	if (n < 0)
	{
		str[0] = '-';
		n = n * -1;
	}
	while (n > 0)
	{
		str[i--] = 48 + (n % 10);
		n = n / 10;
	}
	return (str);
}